Centrifugal milk-separator.



No. 807,639. PATENTED DEC. 19, 1905.

' B. A. O. PROLLIUS.

GBNTRIFUGAL MILK SEPARATOR.

APPLICATION FILED JULY 29. 1904.

Q 7 g 4 o1 o 0 A E v i f d 6* x f 0' i A} l/ minesse 4 90 61 afiar UNITED STATES PATENT OFFICE.

BERNHARD ADOLF OTTO PROLLIUS, OF COPENHAGEN, DENMARK, AS-

SIGNOR TO AKTIESELSKABET BURMEISTER & WAINS MASKIN-OG SKIBSBYGGERI, OF COPENHAGEN, DENMARK.

Specification of Letters Patent.

Patented Dec. 19, 1905.

Application filed Julyf29, 1904. Serial N0. 218,694-

To all whom it may concern:

Be it known that I, BERNHARD ADOLF OTTO PROLLIUS, engineer, of N o. 50 Torvegade, Oopenhagen, .Denmark, have invented certain new and useful Improvements in Centrifugal Separators, of which the following is a specification.

The present invention relates to improvements in centrifugal separators, and especially to apparatus employed in the removal of cream from unskimmed milk.

The object of this invention is to arrange the introduction of the milk and the removal of the cream in such a manner that irregularities in the supply may be easily corrected in the milk-inlet as well as in the creamway, so that equalization of the pressure is facilitated and the separated cream is prevented from adhering to the inlet-tubes.

The invention is shown in the accompanying drawings, in which Figure 1 is a vertical section of a centrifugal separator with the improvements, and Fig. 2 is a horizontal section on the line w y in Fig. 1.

The milk is introduced into the inlet-chamber a in any suitable manner, from which chamber it rises through a series of inlet-tubes 7) arranged concentric with the'axis of the apparatus. Each of these concentric inlettubes 6 is provided with slots or holes 0, which open to the nest of conical plates f of the centrifugal apparatus h.

The outlets g g of the centrifugal apparatus are arranged at such a distance from the axis that the inlet-tubes 6 cannot be completely filled, thus producing a layer or cushion 0Z of air on the inner side of each of the concentric inlet-tubes. These layers of air cl communicate with the exterior of the inlettubes through small openings 0 in the walls of the same.

The apparatus works in the following manner: The unskimmed milk flows from the concentric inlet-tubes 6 through slots or holes 0 out onto the conical plates f, while the cream gathers outside and between the said concentric tubes, so that air layers are also formed within the inner side of the cream layer. If

now the feeding of the'centrifugal apparatus is unequal, (which difliculty may be avoided,) the pressure within the tubes 6, as well as within the inner side of the cream layer, is

equalized by means of the said air layers, and this equalization is facilitated by the fact that the said air layers are mutually connected by means of the small openings e. Further, the cream particles, which eventually are separated by the centrifugal force in the concentric tubes 6, cannot adhere to the inner side of said tubes, but will be carried away by the current of the milk and thrown out through the upper part of the slots or holes 0 of the concentric tubes. The cream particles on the inner side of the cream layer are also prevented from adhering to the outside of the tubes by the layer of air between the cream and the said tubes.

Having now described and ascertained the nature of my said invention, I declare that what 1 claim is- 1. In a centrifugal apparatus, the combination with the inlet-chamber, of a plurality of liner-plates spaced from one another, a plurality of vertical feed-tubes communicating with the inlet-chamber and having holes opening into the spaces between the liner-plates, said tubes being arranged concentric relatively to the axis of the apparatus and having the inner portion of their hollow space out of the path of the liquid to be separated, substantially as set forth and for the purpose described.

2. In a centrifugal apparatus, the combination with the inlet-chamber, of a plurality of liner-plates spaced from one another, a plurality of vertical feed-tubes spaced apart and communicating with the inlet-chamber and having holes opening into the spaces between the liner-plates, said tubes being arranged concentric relatively to the axis of the apparatus and having the inner portion of their hollow space out of the path of the liquid to be sep arated, the walls of said inner portions hav ing openings providing communication be-: tween the tubes and their intermediate spaces, substantially as set forth and for the purpose described.

3. In a centrifugal milk-separator, the combination with the inlet-chamber, of a plurality of liner-plates spaced from one another, a plurality of vertical feed-tubes spaced apart and communicating with the inlet-chamber and having holes opening into the spaces between the liner-plates, said tubes being arranged concentric relatively to the axis of the separator and having the inner portion of their hollow l stantially as set forth and for the purpose despace out of the path of the milk to be sepscribed. IO arated, theinner portion of the spaces between In witness whereof I have hereunto set my the feed-tubes being positioned interior of the hand in presence of two witnesses.

5 cream zone of the separator and the walls of BERNHARD ADOLF OTTO PROLLIUS. the feed-tubes having openings providing com- Witnesses: V munication between the inner portion of the MARCUS MoLLER,

feed-tubes and their intermediate spaces, sub- MAGNUS JENSEN. 

